| 摘要 |
PURPOSE:To efficiently produce natural type abscisic acid useful as a plant hormone by a fermentation method, by inoculating excess specific spores of a specific bacterium belonging to the genus Botrytis into a nutrient culture medium and cultivating the bacterium in the culture medium. CONSTITUTION:Sterile water containing sporal parts of a microorganism, such as Botrytis.cinerea FERM P-615, belonging to the genus Botrytis and capable of producing natural type abscisic acid is dispersed in a stationery culture medium containing a carbon source, such as potato or bran, and further nitrogen source, inorganic salt, etc., added thereto so as to substantially provide >=1.0X10<3> number of spores per g culture medium present therein. Cultivation is carried out at 25-35 deg.C and pH 4-8 for 3-9 days to isolate the natural type abscisic acid from the obtained culture by operation, such as extraction. |
